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https://hdl.handle.net/10316/8250
Title: | Picosecond Structural Relaxation of Abietic Acid Based Amine End Capped Para-Phenylenevinylene Trimers in Solution | Authors: | Paolo, Roberto E. Di Gigante, Barbara Esteves, Maria A. Pires, Natércia Santos, Célia Lameiro, Maria H. Melo, João Seixas de Burrows, Hugh D. Maçanita, António L. |
Issue Date: | 2008 | Citation: | ChemPhysChem. 9:15 (2008) 2214-2220 | Abstract: | The synthesis and photophysical properties of six new abietic acid based amine end-capped p-phenylenevinylene trimers (AECPV3) in their lowest excited singlet states are presented. The AECPV3 compounds show a large red-shift of both the absorption (25-30 nm) and emission (37-42 nm) maxima with respect to those of the corresponding trimers. Picosecond time-resolved fluorescence data reveal the presence of a fast conformational relaxation process (40-62 ps) of the initially excited compounds, leading to more planar conformers. The conformational relaxation time is proportional to the volume of both the side chain and the amine groups. | URI: | https://hdl.handle.net/10316/8250 | DOI: | 10.1002/cphc.200800374 | Rights: | openAccess |
Appears in Collections: | FCTUC Química - Artigos em Revistas Internacionais |
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